W91570DN Datasheet 23-memory Tone/pulse Dialer

Manufacturer: Winbond

Overview: W91570DN SERIES 23-MEMORY TONE/PULSE DIALER WITH AUTOREDIAL RTC AND LCD DISPLAY FUNCTIONS.

Datasheet Details

The W91570DN series ICs are Si-gate CMOS ICs that provide the signals needed for either pulse or tone dialing.

They

Three by 32 digits for redial, save and mercury memory.
Twenty by 16 digits for one-touch direct or two-touch indirect repertory memory.
Uses 6 × 10 keyboard.
Pause, Pulse-to-tone (.
/T) and flash can be stored as a digit in memory.
Minimum tone output duration: 87 mS.
Minimum intertone pause: 87 mS.
Tone/Pulse mode pin selectable.
Make/Break ratio pin selectable.
Dialing rate (10 or 20 ppS) pin selectable.